java-basic data types differ from reference data types

1  Packagecom.liu.u6.copy1;2 /*3 * What is the difference between a basic data type and a reference data type4  */5  Public classSJLX {6      Public intAge ;7 }8  Packagecom.liu.u6.copy1;9  Public classTESTSJLX {Ten      Public Static voidMain (string[] args) { OneSystem.out.println ("*********************** basic data Type *********************8"); A         intNum1=3; -         intNum2=5; -System.out.println ("num1 Original value =" +num1); the         //assigns the value of the NUM1 to num2 -Num2=NUM1; -         //Modify the value of the num2 to see if the value of NUM1 is changed -Num2=8; +SYSTEM.OUT.PRINTLN ("num2 Modified, num1=" +num1); -System.out.println ("*********************** Reference data type *********************8"); +         //instantiate a pair of images ASJLX person1=NewSJLX (); atPerson1.age=23; -         //The assignment to the image is to assign the member variable to the past. -SJLX person2=Person1; -System.out.println ("Front ********" +person1.age); -Person2.age = 29; -System.out.println ("After ********" +person1.age); in          -     } to}

Result output:

java-basic data types differ from reference data types